1
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the surface areas of two nucleii are in the ratio $9: 47$, then the ratio of their mass number is

A

$27: 343$

B

$9: 49$

C

$3: 7$

D

$49: 81$

2
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

$$ \text { In the given options, the diode that is forward biased is } $$

A

AP EAPCET 2025 - 26th May Evening Shift Physics - Semiconductor Devices and Logic Gates Question 3 English Option 1

B

AP EAPCET 2025 - 26th May Evening Shift Physics - Semiconductor Devices and Logic Gates Question 3 English Option 2

C

AP EAPCET 2025 - 26th May Evening Shift Physics - Semiconductor Devices and Logic Gates Question 3 English Option 3

D

AP EAPCET 2025 - 26th May Evening Shift Physics - Semiconductor Devices and Logic Gates Question 3 English Option 4

3
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a common emitter transistor amplifier the resistance of collector is $3 \mathrm{k} \Omega$. If the current amplification factor is 100 and the base resistance is $2 \mathrm{k} \Omega$, then the power gain of the transistor is

A

150

B

10000

C

1500

D

15000

4
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The layer of the atmosphere that reflects low frequency (LF) electromagnetic waves during day time only is

A

$D$

B

$E$

C

$F_1$

D

$F_2$